| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 665842 | 2022-11-27T13:42:54 Z | Bogdan1110 | Stove (JOI18_stove) | C++14 | 0 ms | 0 KB |
#include <bits/stdc++.h>
#define FAST {ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);}
#define FILES {freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);}
#define ll long long
#define ull unsigned long long
#define pqueue priority_queue
#define pb push_back
#define fi first
#define se second
#define ld long double
#define pii pair<int,int>
#define pll pair<long long,long long>
#define all(a) (a).begin(), (a).end()
#define mp make_pair
#define vii vector<int>
#define vll vector<long long>
using namespace std;
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<pll, null_type,less<pll>, rb_tree_tag,tree_order_statistics_node_update>
*/
// order_of_key -> # less than k
// find_by_order -> k-th element
// pq max element
void files() {
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
}
const double eps = 0.00000001;
const int NMAX = 200010;
const ll inf = 1000000000000010;
const ll modi = 15485863 ;
void solve() {
int n,k;
cin >>n >>k;
vector<ll>v(n);
for (int i = 0 ; i < n ; i++ ) {
cin >> v[i];
}
ll tot = n;
pqueue<int>pq;
for (int i = 1 ; i < n ; i++ ) {
pq.push(-v[i]+v[i-1]+1);
}
for (int i = 0 ; i < n-k; i++ ) {
tot -= pq.top();
pq.pop();
}
cout << tot <<endl;
}
int main () {
FAST
int t=1;
/*
cin >> t;
//*/
int i = 1;
while(t--) {
//cout << "Case " << i++ << ": " ;
solve();
}
}